Charge control method of rechargeable battery and portable computer

A charging control method and portable computer technology, which are applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problems such as the inability of the battery to continue to be used, the inability of the rechargeable battery to meet the requirements of the user's battery life time, and the reduction of the service life of the rechargeable battery.

Active Publication Date: 2011-10-12
LENOVO (BEIJING) CO LTD
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  • Summary
  • Abstract
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Problems solved by technology

[0003] It is well known that the number of cycles of rechargeable batteries has a certain limit. When the number of cycles exceeds a threshold (such as 300 times), its usable capacity will rapidly decay, such as decaying to 70% of the initial capacity or even lower.
[0004] Once the usable capacity of the rechargeable battery decays, the rechargeable battery cannot meet the us

Method used

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  • Charge control method of rechargeable battery and portable computer
  • Charge control method of rechargeable battery and portable computer
  • Charge control method of rechargeable battery and portable computer

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Embodiment Construction

[0094] In the charging control method and device of the rechargeable battery and the portable computer according to the embodiments of the present invention, there is at least one time point during the charging process of the primary rechargeable battery, and the first charging current of the rechargeable battery before the time point is greater than that at the time point The second charging current of the rechargeable battery after the point is used to increase the service life of the rechargeable battery and reduce potential safety hazards.

[0095] In the process of realizing the embodiment of the present invention, the inventors found that the key factors affecting the capacity fading and cycle performance of the rechargeable battery include the charging current. Generally speaking, the larger the charging current, the faster the charging speed, but the capacity fading and cycle performance of the rechargeable battery Performance also degrades faster.

[0096] Considering t...

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Abstract

The invention provides a charge control method of a rechargeable battery and a portable computer. The charge control method comprises the following steps: acquiring charge current control parameters of the rechargeable battery; modifying a first charge current of the charge current of the rechargeable battery into a second charge current, wherein the second charge current is less than the first charge current; and using the second charge current to charge the rechargeable battery. The charge control method is used to change the existing mode that the battery is charged by the maximal current, thus improving the service life of the rechargeable battery.

Description

technical field [0001] The invention relates to the technical field of electronic equipment, in particular to a charging control method of a rechargeable battery and a portable computer. Background technique [0002] At present, for some users, notebook computers are powered by rechargeable batteries every day. Therefore, rechargeable batteries may need to be charged and discharged once a day, and the rechargeable batteries can be used up to 300 times a year, or even more. [0003] It is well known that the number of cycles of rechargeable batteries has a certain limit, and when the number of cycles exceeds a threshold (such as 300 times), its usable capacity will rapidly decay, such as decaying to 70% of the initial capacity or even lower. [0004] Once the usable capacity of the rechargeable battery decays, the rechargeable battery cannot meet the user's battery usage time requirements, and the battery cannot continue to be used, so the battery can only be replaced. [00...

Claims

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Application Information

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IPC IPC(8): H02J7/00G06F1/26
CPCG06F1/26H02J7/0071H02J7/00
Inventor 赵双成程孝仁姚玲林威志
Owner LENOVO (BEIJING) CO LTD
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